Shimmer and Sheen Inks: What They Do to a Pen, and How to Use Them Without a Clog
By NibPath . 7 min read . Updated September 2026
Shimmer and sheen are two different tricks an ink can pull off, and mixing them up leads to bad buying decisions and clogged feeds. J. Herbin 1670 Anniversary Ink and Diamine Aurora Borealis Shimmer Ink both suspend fine particles that catch light as you write, while a sheen effect comes from a heavily saturated dye pooling at the edges of a stroke with no particles involved at all. This guide separates the two properties, explains what actually causes a shimmer ink to clog a feed, and lays out the fill system, paper, and flush routine that let you run shimmer ink daily without a repair trip.
Quick answer
Diamine Aurora Borealis and J. Herbin 1670 Anniversary Ink use suspended mica or metallic flakes that sparkle but settle and can clog a feed left sitting; sheen inks show a color shift only where ink pools, with no particles at all. Prevent clogs with a broad nib, flushing every one to two weeks, and a bulb syringe plus pen flush.
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What is the difference between shimmer ink and sheen ink?
J. Herbin 1670 Anniversary Ink is a genuine shimmer ink: it suspends fine metallic particles in a pigmented base, and every stroke you lay down catches light because those particles sit visibly in the dried ink film. Diamine Aurora Borealis Shimmer Ink works the same way with a finer copper and gold particle size, so the sparkle reads more subtly at the same nib width.
Sheen is a different effect entirely, and no particles are involved. A sheen ink is simply a heavily saturated dye that, where wet ink pools thickly in the curve of a stroke, at a stopped pen tip, or on slow-drying paper, reflects a second color at the surface before it fully absorbs. A dye ink with zero shimmer particles, like Pilot Iroshizuku Tsuki-yo Ink , can show a hint of sheen on the right paper even though it carries no suspended material at all.
The practical difference matters for maintenance: shimmer particles are physical material that can settle out and clog a feed, while sheen is a purely optical property of the dye and carries no clog risk of its own.
J. Herbin 1670 Anniversary Ink
A celebratory collection of shimmer inks with large gold particles suspended in richly pigmented bases. The Rouge Hematite and Bleu Ocean colorways are community favorites. Requires broad nibs and regular flushing.
Diamine Aurora Borealis Shimmer Ink
A teal-to-blue shimmer ink from Diamine's Shimmertastic line with fine copper and gold particles. More forgiving for medium nibs than the J. Herbin 1670 and priced accessibly.
Pilot Iroshizuku Tsuki-yo Ink
A saturated teal-green dye ink from Pilot's prestige Iroshizuku line with smooth, consistent flow, moderate shading, and zero shimmer. One of the most-recommended inks for daily writers who want a distinctive color without fuss.
Why do shimmer inks clog fountain pens more than standard dye ink?
Diamine Aurora Borealis Shimmer Ink lists fine copper and gold particles as part of its Shimmertastic formula, and those particles settle to the bottom of the bottle and the converter within days of the pen sitting unused, which is exactly the behavior that leads to a hard stop mid-stroke. A standard dye ink has nothing to settle; every component stays fully dissolved indefinitely.
J. Herbin 1670 Anniversary Ink carries a larger, more dramatic particle size than most shimmer formulas, which is part of why it sparkles more but also why it settles faster and clogs a narrow feed channel more readily if the pen is capped and left for more than two weeks.
The fix is not to avoid shimmer ink, it is to keep the particles moving: shake the bottle before every fill, choose a pen with a wide enough feed channel, and flush on a shorter schedule than you would with a standard dye ink.
Diamine Aurora Borealis Shimmer Ink
A teal-to-blue shimmer ink from Diamine's Shimmertastic line with fine copper and gold particles. More forgiving for medium nibs than the J. Herbin 1670 and priced accessibly.
J. Herbin 1670 Anniversary Ink
A celebratory collection of shimmer inks with large gold particles suspended in richly pigmented bases. The Rouge Hematite and Bleu Ocean colorways are community favorites. Requires broad nibs and regular flushing.
Which fill system handles shimmer ink most reliably?
Pilot CON-70+ Ink Converter moves roughly 1.1ml of ink per fill through a wide bore, and that higher volume per stroke keeps shimmer particles circulating instead of collecting at one tight point the way a narrow cartridge does. It is the safer converter choice for any Pilot pen you plan to ink with Diamine Aurora Borealis Shimmer Ink or a similar shimmer formula.
TWSBI ECO Demonstrator Piston Filler goes a step further with a 1.9ml piston reservoir and a wide, transparent barrel, so you can see whether shimmer particles are still suspended before you write. A piston pen with a visible reservoir is the easiest way to catch a settling problem before it reaches the feed and stalls a stroke.
Avoid pairing shimmer ink with the narrowest cartridges or fine and extra-fine feed channels; the particle size in J. Herbin 1670 Anniversary Ink in particular is too coarse for a tight feed and is best kept to medium and broader nibs.
Pilot CON-70+ Ink Converter
The highest-capacity standard converter from Pilot, holding approximately 1.1ml of ink. Fits all Pilot cartridge-compatible pens including the Metropolitan, Kakuno, Prera, Custom 74, and Explorer. The plus version uses a push-knob fill mechanism.
TWSBI ECO Demonstrator Piston Filler
Not a converter but a complete piston-filling pen with a visible ink reservoir of approximately 1.9ml. Listed here because writers often move to a piston pen to eliminate converter limitations. The ECO is the most recommended entry-level piston filler.
J. Herbin 1670 Anniversary Ink
A celebratory collection of shimmer inks with large gold particles suspended in richly pigmented bases. The Rouge Hematite and Bleu Ocean colorways are community favorites. Requires broad nibs and regular flushing.
Which paper actually shows shimmer and sheen properly?
Sakae Technical Paper Tomoe River Notebook specifies its Tomoe River stock at 52 GSM with heavy surface sizing, and that thin, slow-absorbing sheet is exactly why shimmer particles from J. Herbin 1670 Anniversary Ink sit visibly on the surface instead of sinking into the fibers where they would disappear from view.
The tradeoff on that same Tomoe River paper is dry time: because the surface resists absorption enough to keep particles on top, wet shimmer or sheen ink can take thirty seconds or more to set, long enough that a fast writer or a left-handed writer will smear a page before it dries.
For everyday writing where dry time matters more than showing off maximum sparkle, Rhodia Webnotebook A5 and Clairefontaine Age Bag Notebook A5 both use the same 90 GSM Clairefontaine paper stock, which absorbs faster and dries sooner while still showing a visible, if less dramatic, shimmer and sheen effect.
Sakae Technical Paper Tomoe River Notebook
The definitive Tomoe River paper notebook from the paper's original manufacturer. 52 GSM ultra-thin paper that amplifies ink shading and shimmer. Ghost-through is expected and considered part of the aesthetic by the community.
J. Herbin 1670 Anniversary Ink
A celebratory collection of shimmer inks with large gold particles suspended in richly pigmented bases. The Rouge Hematite and Bleu Ocean colorways are community favorites. Requires broad nibs and regular flushing.
Rhodia Webnotebook A5
The most-recommended fountain pen notebook by working writers. 90 GSM Clairefontaine paper in a hardcover, lay-flat binding with a ribbon bookmark and elastic closure. Available in blank, lined, and dot-grid formats.
Clairefontaine Age Bag Notebook A5
A vintage-styled French notebook with 90 GSM Clairefontaine paper and a soft kraft cover. Lighter than the Rhodia Webnotebook with the same excellent paper and ideal for writers who prefer a softer, more flexible cover.
How do you flush a shimmer ink pen without leaving particles behind?
Monteverde Pen Flush Solution is built to dissolve the pigmented base that carries shimmer particles, which is more than plain water reliably does on its own once particles have dried against the fill threads of a converter.
Start with plain water and a bulb syringe , drawing water through the feed and checking the runoff after each cycle for visible flecks. If flecks are still showing after six to eight plain-water cycles, add Monteverde Pen Flush Solution for two more cycles, then finish with two plain-water cycles to clear the solution itself.
Goulet Pens Fountain Pen Cleaning Kit bundles a large syringe and pen flush together at a lower combined price and is the fastest way to build a shimmer-ready cleaning station if you do not already own the individual pieces.
Monteverde Pen Flush Solution
A concentrated pen flush solution available in 2oz and larger bottles, designed to dissolve fountain pen ink residue, iron gall deposits, and pigmented ink particles. Compatible with all fountain pen materials.
GVN Fountain Pen Bulb Syringe Set
A set of three rubber bulb syringes in different tip sizes for flushing pens with varying fill sections. The most affordable essential cleaning tool, working by drawing water through the pen repeatedly to flush residue.
Goulet Pens Fountain Pen Cleaning Kit
A bundled cleaning kit from Goulet Pens that includes a large bulb syringe, pen flush solution, and a soft microfiber cloth. Everything needed to flush and clean any fountain pen, sold together at a lower price than buying individually.
How often should you flush a pen inked with shimmer or sheen ink?
J. Herbin 1670 Anniversary Ink and other shimmer formulas need a flush every one to two weeks of active use, sooner than a standard dye ink like Pilot Iroshizuku Tsuki-yo Ink , because undissolved particles accumulate in a feed at a faster rate than dissolved dye residue ever does.
A sheen-only ink with no particles, such as Pilot Iroshizuku Tsuki-yo Ink , does not need this shortened schedule since there is no suspended material to settle; a normal monthly flush is enough.
If you are switching between a shimmer ink and a different color, always flush completely before the swap. Leftover shimmer particles mixed into a new ink color show up as unwanted sparkle in a color that was not designed to have any.
J. Herbin 1670 Anniversary Ink
A celebratory collection of shimmer inks with large gold particles suspended in richly pigmented bases. The Rouge Hematite and Bleu Ocean colorways are community favorites. Requires broad nibs and regular flushing.
Pilot Iroshizuku Tsuki-yo Ink
A saturated teal-green dye ink from Pilot's prestige Iroshizuku line with smooth, consistent flow, moderate shading, and zero shimmer. One of the most-recommended inks for daily writers who want a distinctive color without fuss.
Featured in this guide
J. Herbin 1670 Anniversary Ink
A celebratory collection of shimmer inks with large gold particles suspended in richly pigmented bases. The Rouge Hematite and Bleu Ocean colorways are community favorites. Requires broad nibs and regular flushing.
Diamine Aurora Borealis Shimmer Ink
A teal-to-blue shimmer ink from Diamine's Shimmertastic line with fine copper and gold particles. More forgiving for medium nibs than the J. Herbin 1670 and priced accessibly.
Pilot Iroshizuku Tsuki-yo Ink
A saturated teal-green dye ink from Pilot's prestige Iroshizuku line with smooth, consistent flow, moderate shading, and zero shimmer. One of the most-recommended inks for daily writers who want a distinctive color without fuss.
Sakae Technical Paper Tomoe River Notebook
The definitive Tomoe River paper notebook from the paper's original manufacturer. 52 GSM ultra-thin paper that amplifies ink shading and shimmer. Ghost-through is expected and considered part of the aesthetic by the community.
Clairefontaine Age Bag Notebook A5
A vintage-styled French notebook with 90 GSM Clairefontaine paper and a soft kraft cover. Lighter than the Rhodia Webnotebook with the same excellent paper and ideal for writers who prefer a softer, more flexible cover.
Rhodia Webnotebook A5
The most-recommended fountain pen notebook by working writers. 90 GSM Clairefontaine paper in a hardcover, lay-flat binding with a ribbon bookmark and elastic closure. Available in blank, lined, and dot-grid formats.
Pilot CON-70+ Ink Converter
The highest-capacity standard converter from Pilot, holding approximately 1.1ml of ink. Fits all Pilot cartridge-compatible pens including the Metropolitan, Kakuno, Prera, Custom 74, and Explorer. The plus version uses a push-knob fill mechanism.
TWSBI ECO Demonstrator Piston Filler
Not a converter but a complete piston-filling pen with a visible ink reservoir of approximately 1.9ml. Listed here because writers often move to a piston pen to eliminate converter limitations. The ECO is the most recommended entry-level piston filler.
Monteverde Pen Flush Solution
A concentrated pen flush solution available in 2oz and larger bottles, designed to dissolve fountain pen ink residue, iron gall deposits, and pigmented ink particles. Compatible with all fountain pen materials.
Goulet Pens Fountain Pen Cleaning Kit
A bundled cleaning kit from Goulet Pens that includes a large bulb syringe, pen flush solution, and a soft microfiber cloth. Everything needed to flush and clean any fountain pen, sold together at a lower price than buying individually.
GVN Fountain Pen Bulb Syringe Set
A set of three rubber bulb syringes in different tip sizes for flushing pens with varying fill sections. The most affordable essential cleaning tool, working by drawing water through the pen repeatedly to flush residue.
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FAQ
Frequently asked questions
Can shimmer ink damage a fine or extra-fine nib?+
Shimmer ink will not damage the nib itself, but its larger particle size struggles to pass through the tight feed channel of a fine or extra-fine nib and is far more likely to cause a hard clog there than in a medium or broad nib. Stick to medium and broader nibs for shimmer inks like Diamine Aurora Borealis or J. Herbin 1670 Anniversary Ink and reserve fine and extra-fine nibs for standard dye inks.
Is sheen the same thing as shading?+
No. Shading is a variation in color intensity within a stroke, produced by ink pooling slightly more in curves than on fast upstrokes. Sheen is a color shift that appears only where ink pools heavily enough to reflect a second color at the surface before it fully absorbs. Shading depends on dye concentration and stroke speed; sheen depends on how much ink pools and how slowly the paper absorbs it.
Do I need to shake a shimmer ink bottle before every fill?+
Yes. Shimmer particles settle to the bottom of the bottle within a day or two of sitting still, and filling from an unshaken bottle draws mostly plain dye with almost no shimmer. Shake the bottle firmly before every fill, not just the first time you open it.
How do I know a pen is fully clear of shimmer particles?+
The pen is clear when the flush water runs completely clear with no visible metallic flecks, checked against a white paper towel or a bright light source. A slight color tint from the dye base is normal and cosmetic; visible sparkle in the runoff means particles are still moving through the feed and you should keep flushing.
Do I need Tomoe River paper to see sheen?+
No. Sheen shows most dramatically on slow-absorbing paper like Tomoe River because the ink sits on the surface longer before it dries, but a heavily saturated ink can show a hint of sheen on any smooth, well-sized paper if you write slowly enough to let ink pool at the end of a stroke.